Song: "If I Can't Have You"
Artist: Yvonne Elliman
Peak position on the Cashbox Singles chart: #1
Number of weeks on the Cashbox Singles chart: 21
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| February 4, 1978 | 87 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| February 11, 1978 | 75 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| February 18, 1978 | 66 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| February 25, 1978 | 52 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| March 4, 1978 | 32 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| March 11, 1978 | 26 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| March 18, 1978 | 14 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| March 25, 1978 | 11 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| April 1, 1978 | 9 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| April 8, 1978 | 8 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| April 15, 1978 | 5 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| April 22, 1978 | 4 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| April 29, 1978 | 2 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| May 6, 1978 | 2 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| May 13, 1978 | 1 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| May 20, 1978 | 7 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| May 27, 1978 | 12 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| June 3, 1978 | 25 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| June 10, 1978 | 36 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| June 17, 1978 | 43 | If I Can't Have You | Yvonne Elliman | RSO 884 |
| June 24, 1978 | 99 | If I Can't Have You | Yvonne Elliman | RSO 884 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.